[Milsurplus] Holiday Puzzle

[Michael Bittner]

Robert, 
My adapter kit came with the complete bottom cover with phone jack only, no mic jack.  I installed it myself.  No drilling, templates or anything like that.  I just removed the old bottom cover and installed the thick one in its place.  There are steps detailed in the manual for the drilling and mounting that you mention, but it had a Note to skip these steps if the jack plate furnished in the kit is already mounted on a separate bottom cover. I lucked out and got the whole enchilada already assembled.
Mike W6MAB
  ----- Original Message ----- 
  From: WA5CAB at cs.com 
  To: mmab at cox.net ; milsurplus at mailman.qth.net 
  Sent: Sunday, December 27, 2009 1:14 PM
  Subject: Re: [Milsurplus] Holiday Puzzle


  Mike,

  Actually, what was included in the kit (at least those I have or have seen) wasn't a thick bottom cover, but a block or box used to modify the existing thin one.  You removed the bottom cover from the radio being modified, removed the battery contact place from the bottom cover, and using a template supplied in the kit drilled five holes.  Four were for screws to attach the jack box to the outside of the bottom cover.  The fifth, into which you installed a rubber grommet, was for the wire from the jack.  It is terminated in a right-angle mini-banana pin.  To route the receive audio to the external jack, you unplugged the lead going to the earphone and plugged in the lead coming from the jack.  And then closed and latched the bottom cover.

  The late -F bottom cover will not work on a radio that does not have (in place of the gray fiber one) the aluminum spacer with the flip-up terminal board for the leads going to the internal microphone and earphone.  Or more correctly, it will only work with external headset and microphone.  There is no way to connect the internal ones through to the chassis.

  In a message dated 12/27/2009 1:55:49 PM Central Standard Time, mmab at cox.net writes: 


    I recall buying a Homing Modification Kit (MC-619) for my BC-611 from J.J. 
    Glass Co., back in the days of the big mil. surplus stores in downtown Los 
    Angeles. Besides the DF antenna (AN-190), Antenna Coupling Unit (BC-1387), 
    HS-30 earphones, extra earplugs and manual (TB 11-235-8), the kit included a 
    thick bottom cover (called a Jack Plate) to replace the cover on any BC-611 
    with a thin bottom cover. The manual says to discard the thin bottom cover. 
    The thick cover had a phone jack to allow the included phones to be plugged 
    in.
    Mike W6MAB




  Robert  Downs - Houston
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